Sighting device



Dec. 5, 1967 G- B. GUYTON 3,355,809

SIGHTING DEVICE Filed April 6, 1964 2 Sheets-Sheet 1 I in: 6 I I 4 BOI E 5 m;

| J I N V E NTOR. 56 6/677 5. Guy/0n I I BY F1 4 flwM. 16% 2 4W AGENT United States Patent 3,355,809 SIGHTING DEVICE Glen B. Guyton, 1639 E. Pine, Tulsa, Okla. 74106 Filed Apr. 6, 1964, Ser. No. 357,444 4 Claims. (Cl. 33-46) This invention relates to improvements in sighting devices and more particularly, but not by way of limitation, to a sighting device for utilization in archery for facilitating the accuracy of shooting with a bow and arrow.

There is an increasing interest today in archery as a sport and as a result, there have been increasing demands for bow and arrow structures having more accurate shooting qualities. Many devices have been developed for use in archery and in combination with a bow and arrow for improvingthe efficiency of operation. For example, many sighting devices have been designed for use with a bow in order to improve the accuracy of the shot or flight path of the arrow. The sighting devices commonly in use at the present time usually comprise a sighting member or element slidably mounted on the bow in such a manner as to be orientated thereon in accordance with the particular shooting requirements of the moment. It is the common practice to make a particular setting of the sighting element in accordance with the current shooting conditions and mark the setting on the bow or on a portion of the sighting device by manually drawing a pencil line thereon, using a portion of the sighting device as a guide. This process is followed with each separate setting for the sighting element as determined by the particular shooting conditions. When it is desired to return the sighting element to a previous setting, the respective pencil mark is relied upon for aligning or positioning of the sighting element to the earlier setting. It will be readily apparent that the pencil mark is subject to human error at the time of the original marking and, in addition, the return of the sighting element to the mark may not be extremely accurate due in part to the thickness of the pencil line itself.

In addition, the present day sighting devices usually provide means for adjusting the sighting member for windage. This windage adjustor usually provides for a very fine adjustment and during the windage adjustment, it is relatively easy to overadjust the device. When this occurs, it is usually necessary to return to some previous setting and begin the windage adjusting process again. Furthermore, many of these windage adjusting devices have a certain amount of backlash in the operation thereof which is detriment to the accurate adjustment for windage. Thus, whereas the present day sighting devices may increase the shooting accuracy of a bow and arrow, there are many disadvantages in the use thereof.

The present invention contemplates a novel sighting device for use on substantially. any bow structure. An accurate setting may be readily attained for the sighting element in accordance with the conditions existing -for the particular shooting to be accomplished. This setting may be numerically recorded on a chart utilized in association with the sighting device, thus providing a substantially permanent record of each setting. Thus, when a resetting of the sight element is to be made, the sight member may be quickly returned to substantially the exact position first achieved through the use of the corresponding numeric recording. Repeat settings may be made with a maximum error of .0015 inch. In addition, the windage adjustment device is particularly designed and constructed to preclude backlash and to facilitate the windage adjustment.

The novel sighting device comprises a sight bar arranged for installation on a bow of substantially any design or construction and having a means for range alignment adjustment. A sight body slidably disposed on the sight bar may be easily adjusted or moved therealong to the desired position in accordance with the current shooting operation. The first and second digits of the numerical recording of a particular setting may be read directly from the indicia on the sight bar and the third digit, which is determined by a fine adjustment device, may be read from the fine adjustment knob. A fourth digit may be interpolated or estimated between the graduations on the fine adjustment knob, thus providing an accurate reference number for the setting. These digits may be recorded on a suitable chart disposed within a card holder which is secured to the bow in association with the sight bar. This particular setting may be repeated at any time by moving the sight body along the sight bar to the position corresponding to the recorded numbers and by adjusting the fine adjusting knob accordingly. The windage adjustment knob is provided on the sight body in association with the sight element and is provided with a braking means for substantially eliminating accidental rotation of the knob due to vibrations and, in addition, is provided with means for substantially eliminating backlash during the windage adjustment.

It is an important object of this invention to provide an improved sighting device for use in archery to increase the accuracy of operation of a bow and arrow.

It is another object of this invention to provide a novel sighting device wherein each setting of the sighting element may be quickly and accurately accomplished.

Another object of this invention is to provide a novel sighting device wherein each setting of the sighting element corresponds to a numeric reference which permits a recording of the setting to maintain a substantially permanent record thereof.

A fiurther object of this invention is to provide a novel sighting device wherein the setting of the sighting element is correlated with a numeric reference system whereby settings of the sighting element may be repeated with great accuracy.

A still further object of this invention is to provide a novel sighting device wherein the sighting element may be efficiently adjusted for windage with a substantial elimination of backlash during the windage adjustment operation.

Still another object of this invention is to provide a sighting device for use in archery which is particularly designed and constructed for universal mounting on sub stantially any type of bow.

Still another object of this invention is to provide a novel sighting device which is simple and efficient in operation and durable in construction.

Other and further objects and advantageous features of the present invention will hereinafter more fully appear in connection with a detailed description of the drawings in which:

FIGURE 1 is a side elevational view of a portion of a bow having a sighting device embodying the invention mounted thereon.

FIGURE 2 is a front elevational view of a portion of a bow having a sighting device embodying the invention mounted thereon.

FIGURE 3 is an enlarged sectional view taken on line 3--3 of FIGURE 2.

FIGURE 4 is an enlarged elevational view of a mounting member utilized in the invention.

FIGURE 5 is an enlarged front elevational View of the sight bar with a sight body depicted in section thereon.

FIGURE 6 is a sectional view of the sight body with portions thereon depicted in elevation for purposes of illustration.

FIGURE 7 is a side view of the sight body mounted. on the sight bar with portions depicted in section for purposes of illustration.

Referring now to the drawings in detail, reference character 10 generally indicates a sighting device adapted for installation on a how 12 for improving the shooting accuracy thereof. The bow 12 may be of any suitable type and the sighting device is particularly adapted to be mounted on substantially any bow structure. The sighting device 10 comprises an elongated sight bar 14 having a plurality of notches or teeth 16 extending along one edge thereof. It is to be noted that whereas the sight bar 14 depicted herein is provided with the notches 16 extending along the left hand edge thereof as viewed in the drawings it may be desirable to provide the notches 16 on the right hand edge of the bar 14 depending upon whether the sighting device 10 is to be disposed on the near side or far side of the bow 10. A sight body generally indicated at 18 is slidably disposed on the sight bar for longitudinal movement therealong as will be hereinafter set forth.

One face 20 of the sight bar 14 is provided with suitable indicia 22 which cooperates with the sight body 18 to provide a numerical reference for each setting of the sight body 18 with respect to the sight bar 14 for a purpose as will be hereinafter set forth. The lower end of the bar 14 as depicted in the drawings, is provided with an aperture 24 for receiving a suitable screw 26 which extends therethrough for threaded engagement with a mounting device generally indicated at 28. The lower mounting device 28 comprises a shank 30 having a plurality of spaced circumferential grooves 32 provided thereon for anchoring of the shank 30 in the body of the bow 12. The upper end of the shank 30 is enlarged at 34 to provide a head portion which extends outwardly from the surface of the bow 12 when the shank 30 is embedded therein. The head 34 is bifurcated as clearly shown in FIGURE 3 and is provided with a transversely extending bore 36 extending therethrough. A trunnion nut 38 extends through the bore 36 and is suitably journalled therein for rotation about the longitudinal axis thereof. The screw 26 is threadedly engaged with the trunnion nut 38 as shown in FIGURE 3 for securing the sight bar 14 to the head member 34 whereby the angular disposition of the sight bar 14 with respect to the exposed or mounting surface 13 of the bow 12 may be adjusted in accordance with the configuration of the bow.

A second bore or aperture 40 is provided in the upper end of the sight bar 14 as shown in the drawings for receiving a suitable screw 42. The screw 42 extends through the bore 40 into connection with an upper mounting device generally indicated at 44. The mounting device 44 comprises a substantially L-shaped mounting bracket 46 secured to the mounting surface 13 in any suitable manner such as by the screw 48 whereby one leg 50 of the bracket 46 extends upwardly from the mounting face 13 at substantially right angles with respect thereto. A threaded shank 52 extends through an aperture (not shown) provided in the upstanding leg 50 and may be locked in variable longitudinal positions therein by means of complementary lock nuts 54 and 56, as is well known. An enlarged mounting block portion 58 is provided on the left end of the threaded shank 52 as viewed in FIGURES 2 and 4 and is provided with an upstanding boss member 60 having a threaded aperture 62 extending therethrough. The screw 42 extends into threaded engagemcnt with the bore 62 for securing the sight bar 14 to the threaded shank 52. Manual rotation of the stud 52 in one direction will move the stud 52 in a left hand direction with respect to the leg 50 whereas rotation of the stud 52 in an opposite direction will move the stud in a right hand direction as viewed in FIGURES 2 and 4. It will be apparent that this left and right hand longitudinal movement of the stud 52 provides for a corresponding movement of the upper end of the bar 14. This permits an angular adjustment of the sight bar 14 with respect to the bow 12 and the pin or screw 26 is a pivot point for the bar 14 during the lateral angular adjustment thereof.

The sight body 18 comprises a substantially rectangular housing 64 having an outwardly extending shoulder portion 66 (FIGURES 2 and 6) provided with a downwardly and inwardly directed extension member 68 forming a groove 70 extending through the lower portion of the housing 64. A complementary downwardly and inwardly extending element 72 is provided on the lower portion of the housing 64 as viewed in FIGURE 6 providing a complementary groove 74 in substantial alignment with the groove 70 for slidably receiving the bar 14 therein. A flat spring 71 is interposed between the housing 64 and adjacent upper surface of the bar 14 and a similar flat spring 73 is provided in the groove 74 between the body 64 and one edge of the bar 14. The springs 71 and 73 facilitate the slidable movement of the sight body 18 along the bar 14. An outwardly extending flange or shoulder portion 76 is provided on the element 72 for cooperating with the housing 64 to provide a groove 78 for receiving a substantially rectangular pivotal lever 80. The lever 80 is pivotally secured in the groove 78 by means of a substantially centrally disposed screw 82 (FIGURE 7) for a purpose as will be hereinafter set forth.

A worm gear generally indicated at 84 is threadedly secured to one end of the lever 80 by a screw 86 which extends longitudinally through the gear 84. The gear 84 is provided with a toothed portion 88 having a spiral groove or thread of a configuration complementary to the notches or teeth 16 provided on the bar 14 for engagement therewith in the setting of the sight body 18 on the sight bar 14 as will be hereinafter set forth in detail. A cylindrical portion 90 is provided on the Worm gear 84 conterminous with the toothed portion 88 and is pro vided with a plurality of circumferentially spaced reference lines 92 for cooperation with an indexing line 94 (FIGURE 1) provided on the lever 80. As clearly shown in FIGURE 7, reference numerals are provided on the cylindrical portion 90 for identifying each of the reference lines 92 as is well known in calibrating devices. The gear 84 is journalled on the screw 86 in any suitable manner for free rotation with respect thereto.

As hereinbefore set forth, the lever 80 is pivotally secured to the housing 64 by means of the screw 82. The exposed side portion 96 of the lever 80 is provided with a knurled portion 98 in the proximity of the end thereof oppositely disposed from the gear 84. The inwardly directed side portion of the lever 80 is tapered slightly as shown at 100 (FIGURE 5) whereby manual pressure against the knurled portion 98 will urge the tapered portion 100 in a right hand direction as viewed in FIGURE 5 for pivoting the lever 80 whereby the gear 84 will be disengaged from the teeth 16 in order to facilitate movement of the sight body 18 along the sight bar 14 as will be hereinafter set forth in detail. A recess or bore 102 is provided on the tapered portion 100 of the lever 80v for receiving a suitable spring 104 therein. A complementary bore 106 is provided in the housing 64 for receiving a spring guide member 108 which extends into the bore 102 and the spring 104 is disposed around the outer periphery of the guide pin 108 as clearly shown in FIGURE 5. The guide pin 108 is provided with an outwardly extending circumferential flange 110 and the spring 104 has one end thereof bearing against the flange 110 and the opposite end thereof bearing against the closed end of the bore 102 for constantly urging the pivot lever 80 in a counterclockwise direction around the pivot pin 82 as viewed in FIGURE 5 in order to retain the gear 84 in a normally engaged position with the teeth 16. A complementary knurled portion 99 may be provided on the outer edge of the shoulder portion 66 for facilitating manipulation of the sight body 18 during movement thereof along the bar 14.

A bore 112 is provided in the housing 64 and extends therethrough substantially perpendicularly with respect to the grooves 68, 74, and 78 for receiving a sighting element generally indicated at 114 therethrough. The sighting element 114 comprises a threaded shank member 116 extending through a stabilizing sleeve 118 which is slidably disposed in the bore 112 as particularly shown in FIG- URES and 6. A neck portion 120 is provided on the right hand end of the threaded shank 116 as viewed in the drawings and terminates in an annular sight receiving member 122. A sight member 124 is disposed within the ring 122 and may be of any suitable type. As depicted herein, the sight member 124 comprises a radially inwardly extending arm 126 having bulbous portion 128 on the outer extremity thereof which functions as the sighting point. The radial arm 126 is carried by or integral with a cylindrical sleeve 130 (FIGURE 5) movably disposed Within the ring 122. The cylindrical member 130 is preferably constructed of a suitable fiat spring stock for facilitating insertion thereof within the ring 132 and may be rotated therein as desired for orientation of the arm 126 as best suits the operator of the device 10. It will be apparent, of course, that a stationary sight may be utilized if desired in lieu of the sighting device 124 depicted herein.

The bore 112 is reduced at 132 (FIGURE 6) to pro vide a shoulder for supporting a spring 134 disposed within the bore 112 for constantly urging the stabilizer 118 in a right hand direction as viewed in FIGURES 4 and 6. The stabilizer 118 is provided with a centrally disposed threaded bore 136 for receiving the shank 116 therethrough. A transverse bore 138 extends through the stabilizer 118 into communication with the central bore 136 for receiving a suitable set screw 140 therein. The set screw 140 is provided for hearing against the outer periphery of the threaded shank 116 in order to secure the stabilizer 118 thereto and a protective pad 142, which may be made of nylon or the like, is interposed between the screw 140 and the threads of the shank 116 for pre eluding damage to the threads. The screw 140 is preferably sufficiently tightened against the shank 116 for securing the stabilizer 118 thereto for movement simultaneously therewith, as is well known, but is retained sufliciently loose against the shank 116 whereby the shank 116 may be manually rotated against the force of the screw and independently of the stabilizer 118 in certain instances as will be hereinafter set forth. A longitudinally extending slot 144 is provided on the outer periphery of the stabilizer 118 for receiving plunger 146 therein whereby rotation of the stabilizer 118 within the bore 112 is precluded. The plunger 146 is slidably disposed in a bore 148 provided in the housing 64 and a suitable spring 150 is disposed within the bore 148 for constantly urging the piston 146 in a direction toward the stabilizer 118. A retaining pin 152 extends through a portion of the housing 64 substantially perpendicular with respect to the plunger 146 for retaining the spring 150 and plunger 146 in position within the bore 148. An indexing line 153 (FIGURE 6) is provided on the outer periphery of the stabilizer 118 and may be viewed through an aperture (not shown) provided in the housing 64 whereby reference may be made to the longitudinal position of the stabilizer 118 within the bore 112.

A windage adjustment knob 154 is threadedly secured on the shank 116 and disposed outwardly of the housing 64. The knob 154 is provided with a reduced neck portion 156 which extends through the bore 132 of the housing 64 for assuring proper alignment of the knob 154 with respect to the stabilizer 118. An annular groove 158 is provided on one face of the knob 154 disposed adjacent the housing 64 for receiving an O-ring 160 therein. The O-ring 160 bears against the adjacent surface of the housing 64 and provides an inherent braking action between the knob and the housing for substantially precluding accidental rotation of the knob 154 due to vibrations which usually occur during operation of the bow 12. In other words, as the knob 154 is rotated, the O-ring 160 provides a certain amount of resistance and positively retains the knob in the selected position without permitting free rotation of the knob when the manual pressure is released therefrom. In addition, the spring 134 acting against the stabilizer 118 substantially precludes any backlash during rotation of the knob 154 when the sighting element 114 is being adjusted for windage. The knob 154 is provided with a knurled portion 162 on the outer periphery of the end thereof for facilitating manual grasping and rotating of the knob and a plurality of circumferentially spaced reference marks or lines 164 (FIGURE 2) are provided around the outer periphery of the knob in the proximity of the housing 64 for cooperation with an indexing line 166 provided on the housing 64 as is well known in calibrating devices. Each of the reference markings 164 is identified by a reference numeral as shown in FIGURE 2 and, as is well known, manual rotation of the knob 154 in one direction causes the threaded shank 116 to move longitudinally in a right hand direction as viewed in FIGURES 5 and 6 whereas rotation of the knob 154 in an opposite direction causes the shank 116 to move longitudinally in a left hand direction. Of course, the stabilizer 118 moves or slides within the bore 112 simultaneously with the longitudinal movement: of the shank 116 and thus guides or stabilizes the movement of the shank 116 as the sight element 114 is being adjusted for windage as will be hereinafter set forth in detail.

A bracket or holding member 168 which may be of any suitable type is secured to the how 12 in any convenient location and preferably in the proximity of the sight device 10 as shown in FIGURE 1. The holder 168 as depicted herein comprises a substantially flat rectangular back member 170 having inwardly directed flange member 172 spaced slightly therefrom and extending around approximately in the distance of three edges thereof. This provides a pocket for receiving suitable record ing charts or cards 174 therein. The holder 168 is preferably secured to the how by a suitable cement and is of an extremely light weight construction whereby there will be no hindrance to the normal use of the bow 12. The cards 174 are ruled in any suitable manner for providing a plurality of longitudinally and transversely extending columns whereby the reference numerals relating to each setting of the sight body 18 with respect to the sight bar 14 may be recorded thereon.

Installation In order to install the sighting device 10 on a how 12, the sight body 18 is preferably removed from the sight bar 14 and this may be accomplished by manually gripping the oppositely disposed knurled portions 98 and 99 for disengaging the knob 84 from the teeth 16. This permits the slide body to be manually moved longitudinally along the bar 14 and removed therefrom. The upper mounting bracket 44 may be assembled with the stud 52 extending therethrough and the block 58 may be secured to the upper end of the bar 14 by the screw 42. The sight bar may be positioned with respect to the bow in the most desirable location for the operator of the device 10 and the mounting bracket 44 may then be secured to the bow in a corresponding position. If it is found that the sight bar will not clear any structural portion of the how 12 when thus mounted thereon, suitable spacers (not shown) may be interposed between the bracket 44 and the bow in order to elevate the position of the upper end of the bar 14 as required. The lower mounting device 28 may besecured to the bar 14 by the screw 26 and bar 14 having the lower mounting 28 secured thereto may be pressed in place on the bow with a suitable closed chuck jaw (not shown) for embedding the shank 30 within the body of the bow 12. It is to be noted that the sight bar 14 may pivot in directions both substantially parallel with and 0 perpendicular to the bow surface 13, thus providing a substantially universal mounting for the bar 14 on a bow of any desired structure.

The sight bar 14 may be aligned with either the bow string (not shown) or the bow. This may be done by manual rotation of the stud 52 for adjusting the angular 7 position of the bar 14 as desired. The sight body may now be replaced on the bar in a reverse manner to that hereinbefore set forth and the card holder 168 may be cemented in a convenient place on the bow.

Calibration The first step in the calibrating of the sighting device 10 is to shoot a plurality of arrows (not shown) in the usual manner in groups with a range of approximately 80 to 100 yards, setting the sighting element 114 to center the groups of arrows laterally. The sighting element 114 is adjusted laterally by rotation of the knob 154. Of course rotation of the knob 154 in one direction moves the sighting point 128 in a right hand direction whereas rotation of the knob 154 in an opposite direction moves the sighting point 128 in a left hand direction. It is preferable that there be no wind blowing whatsoever when this first calibrating step is being accomplished.

The second step in the calibrating of the sighting device 10 is to alter the shooting range to approximately yards and shoot a plurality of groups of arrows without rotation of the knob 154. In this step, the lateral angular position of the bar 14 is adjusted by means of rotation of the screw 52 in the proper direction for moving the bar 14 for positioning the sighting point 128 in the lateral center of the, groups of shots.

Operation The sighting device 10, now installed on the bow and properly calibrated, is ready for use in normal shooting. The vertical position of the sight body 8 may be altered by manual rotation of the worm gear 84. As hereinbefore set forth, the teeth 88 are normally retained in engagement with the teeth 16 whereby rotation of the worm gear 84 in one direction will move the sight body upwardly along the sight bar 14 and rotation of the knob 84 in an opposite direction will move the sight body downwardly along the sight bar 14. if it is desired to move the sight body through a relatively great distance along the sight bar the two oppositely disposed knurled portions 98 and 99 may be manually gripped for pivoting the lever 80 and releasing the engagement between the teeth 88 and 16 whereby the sight body 18 may be readily moved along the bar.

When the sight body has been moved along the sight bar to the desired position for locating the sighting point 128 for the particular shooting requirements, the position of the sighting body will have a relatively numeric value. This number consists of the digits provided on the sight bar in combination with the digits on the knob 84. By way of example, as clearly shown in FIGURE 5, the indicia on the sight bar includes spaced relatively long lines having groups of relatively short lines interposed therebetween. Reference numerals are applied to each of the relatively long lines and reference numerals are also applied to each of the relatively short lines. The first number in the reference digit for the particular setting of the sight body will be the number in association with the relatively long line disposed in the closest proximity to the upper end of the sight body. The second number in the reference digit will be the number associated with the relatively short line disposed immediately above the sight body. The third number in the reference digit will be the number provided on the knob 84 which is positioned in the close proximity of the reference line 94 provided on the pivot lever 84?. The fourth number of the reference digit may be estimated in accordance with the spacing distance of the indexing line 94' between the two adjacent reference numerals closest thereto on the knob 84. This number may be recorded on the chart 1'74 and if at any time it is desired to reset the sight body to this same location, the sight body may be moved to an identical position by reference to the recorded information.

The lateral position of the guiding point 128 may be adjusted by rotation of the windage knob 154. As the 8 knob 154- is rotated in one direction, the shank 116 and the stabilizer 118 are moved in a right hand direction within the bore 112. As the knob is rotated in an opposite direction, the shank 116 and stabilizer 118 are moved in a left hand direction within the bore 112. The reference line 153 provided on the outer periphery of the stabilizer 118 is visible through an aperture (not shown) provided in the housing 64. The position of the stabilizer 118 within the bore 112 may thus be noted through at least a portion of the adjusting distance and the position of the stabilizer may be recorded on the chart by reference to the number on the knob 154 in association with the reference line 166 provided on the body 64, if desired, as is well known in calibrating devices. Thus, the lateral setting of the sight element 114 may be repeated with great accuracy as well as the vertical adjustment thereof. In addition, if the stabilizer 118 is moved in a right hand direction as viewed in FIGURE 6, a suflicient distance to bring the index line 153 into view beyond the body 64. Further adjustment of the knob 154 should be stopped in order to preclude accidental loss of the stabilizer from the bore 112. In this position it may be desirable to move the stabilizer 118 in a left hand direction while retaining the lateral position of the sighting point 128. In order to accomplish this the knob 154- may be manually held stationary and the shaft 116 may be manually rotated through any given number of complete revolutions. The knob 154 may then be rotated in an opposite direction from the thread 116 through an identical number of complete rotations which will move the stabilizer in a left hand direction and bring the sighting point 128 back to the original position thereof.

From the foregoing, it will be apparent that the present invention contemplates a novel sighting device wherein both vertical and lateral adjustments may be readily accomplished with great accuracy. In addition, repeat settings of the sighting device may be achieved with extreme accuracy since each setting of the sight corresponds to a reference numeral which is recorded on the chart carried in association with the sighting device. The sighting device is provided with universal mounting means whereby the apparatus may be utilized on substantially any bow structure. The novel sight device is Simple and efiicient in operation and durable in construction.

Changes may be made in the combination and arrangement of parts as heretofore set forth in the specification and shown in the drawings, it being understood that any modification in the precise embodiment of the invention may be made within the scope of the following claims, without departing from the spirit of the invention.

What is claimed is:

1. A sighting device comprising a slide bar having a plurality of notches provided along at least one edge thereof, means providing for universal mounting of the bar on a device to be sighted, means providing for lateral angular adjustment of the bar relative to the device to be sighted, a sight body slidably disposed on the slide bar and comprising a housing having a recess extending there through for slidably receiving the slide bar therein, a spring urged pivotal lever carried by the housing, first adjustment means journalled on the lever and having a spiral groove thereon of a configuration complementary to the notches on the slide bar, said pivotal lever urging said first adjustment means in a direction toward the bar whereby the spiral groove is in normal engagement with the notches, a sighting element disposed within the housing and laterally movable with respect to the movement of the sight body along the sight bar, second adjustment means carried by the sighting element to provide for lateral adjustment thereof, stabilizing means disposed within the housing for stabilizing the movement of the sighting element, reference indicia provided on the slide bar and first and second adjustment means whereby a permanent reference number is obtained for each position of the sight body and sighting element whereby the reference numbers may be recorded to increase the accuracy of resetting the sight body and sighting element to substantially any previous position.

2. A sighting device as set forth in claim 1 wherein braking means is interposed between the second adjust ment means and the housing for substantially precluding backlash during operation of the said second adjustment means.

3. A sighting device comprising a sight bar having a plurality of longitudinally spaced notches extending along one edge thereof, a sight body reciprocally disposed on the bar and comprising a housing having a groove extending therethrough for slidably receiving the bar therein, a pivotal lever carried by the housing, a worm gear journalled on the lever, spring means disposed in the housing for urging the pivotal lever in a direction for maintaining the Worm gear in a normally engaged position with the notches of the slide bar whereby rotation of the Worm gear moves the slide body along the slide bar, means for releasing the engagement of the worm gear with the notches for facilitating manual movement of the slide body along the bar, said housing provided with a bore extending substantially perpendicular to the sight bar, a threaded shank extending through the bore, a stabilizer member secured to the shank and slidably disposed within the bore, spring urged means extending through the housing and into engagement with the stabilizer member for precluding rotation thereof, a sighting element carried at one end of the shank, an adjustment knob journalled on the housing at the opposite end of the shank and cooperating w-ith the shank whereby rotation of the knob in one direction moves the shank longitudinally in one direction and rotation of the knob in an opposite direction moves the shank longitudinally in an opposite direction to provide lateral adjustment for the sighting element, and braking means interposed between the adjustment knob and the housing to substantially preclude accidental rotation of the knob, and spring means cooperating between the housing and stabilizer member for substantially precluding backlash during rotation of the knob.

4. A sighting device as set forth in claim 3 wherein complementary reference indicia is provided on the bar and worm gear and housing and adjustment knob to provide a numeric identification for each position of the sight body with respect to the bar and the sighting element with respect to the housing for increasing the accuracy of resetting thereof to substantially any previous position.

References Cited UNITED STATES PATENTS 1,177,090 3/1916 Blake 33-55 1,279,908 9/1918 Reising 33-55 1,961,517 6/1934 Klopsteg 33-464 3,027,648 4/1962 Crook 33-464 3,163,938 1/1965 Reynolds 33-46.4 3,210,851 10/1965 Spack 3356 FOREIGN PATENTS 1,431 1864 Great Britain. 1,389 1905 Great Britain.

SAMUEL S. MATTHEWS, Primary Examiner. 

1. A SIGHTING DEVICE COMPRISING A SLIDE BAR HAVING A PLURALITY OF NOTCHES PROVIDED ALONG AT LEAST ONE EDGE THEREOF, MEANS PROVIDING FOR UNIVERSAL MOUNTING OF THE BAR ON A DEVICE TO BE SIGHTED, MEANS PROVIDING FOR LATERAL ANGULAR ADJUSTMENT OF THE BAR RELATIVE TO THE DEVICE TO BE SIGHTED, A SIGHT BODY SLIDABLY DISPOSED ON THE SLIDE BAR AND COMPRISING A HOUSING HAVING A RECESS EXTENDING THERETHROUGH FOR SLIDABLY RECEIVING THE SLIDE BAR THEREIN, A SPRING URGED PIVOTAL LEVER CARRIED BY THE HOUSING, FIRST ADJUSTMENT MEANS JOURNALLED ON THE LEVER AND HAVING A SPIRAL GROOVE THEREON OF A CONFIGURATION COMPLEMENTARY TO THE NOTCHES ON THE SLIDE BAR, SAID PIVOTAL LEVER URGING SAID FIRST ADJUSTMENT MEANS IN A DIRECTION TOWARD THE BAR WHEREBY THE SPIRAL GROOVE IS IN NORMAL ENGAGEMENT WITH THE NOTCHES, A SIGHTING ELEMENT DISPOSED WITHIN THE HOUSING AND LATERALLY MOVABLE WITH RESPECT TO THE MOVEMENT OF THE SIGHT BODY ALONG THE SIGHT BAR, SECOND ADJUSTMENT MEANS CARRIED BY THE SIGHTING ELEMENT TO PROVIDE FOR LATERAL ADJUSTMENT THEREOF, STABILIZING MEANS DISPOSED WITHIN THE HOUSING FOR STABILIZING THE MOVEMENT OF THE SIGHTING ELEMENT, REFERENCE INDICIA PROVIDED ON THE SLIDE BAR AND FIRST AND SECOND ADJUSTMENT MEANS WHEREBY A PERMANENT REFERENCE NUMBER IS OBTAINED FOR EACH POSITION OF THE SIGHT BODY AND SIGHTING ELEMENT WHEREBY THE REFERENCE NUMBERS MAY BE RECORDED TO INCREASE THE ACCURACY OF RESETTING THE SIGHT BODY AND SIGHTING ELEMENT TO SUBSTANTIALLY ANY PREVIOUS POSITION. 